Xin-Lao grows up abused, nameless, and unwanted. He survives through instinct and an unnatural talent for combat, slowly gaining attention across the martial world. What begins as a journey of survival turns darker when he encounters undead warriors, corrupt religious sects, and signs that something far greater than martial power is manipulating reality. When Xin-Lao becomes the chosen bearer of the Nine Heavenly Sword Spirits, he threatens the balance upheld by gods and celestial kings. Alongside Namgung-Yeon, a woman tied to a divine mission, he must destroy the Heavenly Gates sustaining this corrupt order, even if doing so risks the collapse of the world itself.